US3095388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersion polymerisation of an acrylate in the presence of a rubber and a non-polar organic solvent and product obtained
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1962-01-29
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Granted: 1963-06-25
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Osmond Desmond Wilfrid John
- 👤 Thompson Horace Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; Y; Y10; Y10S; Y10S524/00; Y10S524/924
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A PROCESS FOR PRODUCING A STABLE DISPERSION OF A SOLID POLYMER IN AN INERT RELATIVELY NON-POLAR COMPRISES LIQUID IN WHICH THE POLYMER IS INSOLUBLE, WHICH COMPRISES POLYMERISING AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, LOWER ESTERS, AMIDES AN NITRILES THEREOF IN SAID ORGANIC LIQUID AND IN THE PRESENCE OF A CATALYST FOR THE POLYMERISATION OF SAID MONOMER AND RUBBER WIHICH IS SOLUBLE IN SAID ORGANIC LIQUID TO FORM SAID STABLE DISPERSION OF SOLID POLYMER IN ORGANIC LIQUID.
Claim 2
Dependent Claim
85 words
A PROCESS FOR PRODUCING A STABLE DISPERSION OF A SOLID POLYMER IN AN INERT RELATIVELY NON-POLAR COMPRISES LIQUID IN WHICH THE POLYMER IS INSOLUBLE, WHICH COMPRISES POLYMERISING AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, LOWER ESTERS, AMIDES AN NITRILES THEREOF IN SAID ORGANIC LIQUID AND IN THE PRESENCE OF A CATALYST FOR THE POLYMERISATION OF SAID MONOMER AND RUBBER WIHICH IS SOLUBLE IN SAID ORGANIC LIQUID TO FORM SAID STABLE DISPERSION OF SOLID POLYMER IN ORGANIC LIQUID.
Claim 3
Dependent Claim
141 words
A PROCESS FOR PRODUCTING A STABLE DISPERSION OF A SOLID POLYMER IN AN INERT RELATIVELY NON-POLAR ORGANIC LIQUID IN WHICH POLYMER IS INSOLUBLE, WHICH COMPRISES POLYMERISING AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AN METHYACRYLIC ACID, LOWER ESTERS, AMIDES AND NITRILES THEREOF IN SAID ORGANIC LIQUID AND IN THE PRESENCE OF A CATALYST FOR THE POLYMERISATION OF SAID MONOMER AND A MEMBER OF THE GROUP CONSISTING OF ORGANIC BLOCK AND GRAFT COPOLYMERS OF WHICH ONE CONSTITUENT IS RUBBER WHICH IS SOLUBLE IN SAID ORGANIC LIQUID AND ANOTHER CONSTITUENT IS INSOLUBLE IN THE ORGANIC LIQUID AND COMPATIBLE WITH THE POLYMER BEING FORMED SUCH THAT, IF A FILM IS CAST FROM A SOLUTION IN THE SAME SAID POLYMER AND SAID COMPATIBLE CONSTITUENT IN THE SAME PROPORTION AS WILL BE PRESENT IN THE DISPERSED PARTICLES, THE FILM IS CLEAR.
Claim 4
Dependent Claim
141 words
A PROCESS FOR PRODUCTING A STABLE DISPERSION OF A SOLID POLYMER IN AN INERT RELATIVELY NON-POLAR ORGANIC LIQUID IN WHICH POLYMER IS INSOLUBLE, WHICH COMPRISES POLYMERISING AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AN METHYACRYLIC ACID, LOWER ESTERS, AMIDES AND NITRILES THEREOF IN SAID ORGANIC LIQUID AND IN THE PRESENCE OF A CATALYST FOR THE POLYMERISATION OF SAID MONOMER AND A MEMBER OF THE GROUP CONSISTING OF ORGANIC BLOCK AND GRAFT COPOLYMERS OF WHICH ONE CONSTITUENT IS RUBBER WHICH IS SOLUBLE IN SAID ORGANIC LIQUID AND ANOTHER CONSTITUENT IS INSOLUBLE IN THE ORGANIC LIQUID AND COMPATIBLE WITH THE POLYMER BEING FORMED SUCH THAT, IF A FILM IS CAST FROM A SOLUTION IN THE SAME SAID POLYMER AND SAID COMPATIBLE CONSTITUENT IN THE SAME PROPORTION AS WILL BE PRESENT IN THE DISPERSED PARTICLES, THE FILM IS CLEAR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |